When n-hexane is heated with anhydrous AlCl3 and HCl gas, the major product obtained is
1-chlorohexane
2-chlorohexane
3-chlorohexane
mixture of 2-methylpentane and 3-methylpentane
How many monochloro structural isomers are expected in free radical monochlorination of 2-methylbutane?
3
4
5
6
Green chemistry deals with
study of plant physiology
study of extraction of natural products from plants
detailed study of reactions involved in the synthesis of chlorophyll
utilization of existing knowledge base for reducing the chemical hazards along with developmental activities
Potassium dichromate belongs to which crystal system?
Tetragonal
Orthorhombic
Triclinic
Hexagonal
The reaction of H2 is given below
H2 + CO + R - CH = CH2 → R - CH2
-CH2-CHO is specifically called as
hydrogenation
reduction
hydroformylation
dehydration
Which one of the following is an incorrect statement?
O3 oxidises PbS to PbSO4
O3 oxidises nitric oxide to nitrogen dioxide
O3 oxidises aqueous Kl at pH = 9.2
The two oxygen-oxygen bond lengths in O3 are different
A sample of sea water contains 5 × 10-3 g of dissolved oxygen in 1 kg of the sample. The concentration of O2 in that sea water sample in ppm is
5
5 × 10-3
5 × 10-2
5 × 10-1
In a reaction, 2A + B → 3C, the concentration of A decreases from 0.5 mol L-1 to 0.3 mol L-1 in 10 minutes. The rate of production of 'C' during this period is
0.01 mol L-1 min-1
0.04 mol L-1 min-1
0.05 mol L-1 min-1
0.03 mol L-1 min-1
Ammonium ion (NH4+) reacts with nitrite ion (NO) in aqueous solution according to the equation
NH4+ (aq) + NO (aq) → N2 (g) + 2H2O (l)
The following initial rates of reaction have been measured for the given reactant concentrations.
Expt. No. | [NH4+], (M) | [NO), (M) | Rate (M/hr) |
1 | 0.010 | 0.020 | 0.020 |
2 | 0.015 | 0.020 | 0.030 |
3 | 0.010 | 0.010 | 0.005 |
Which of the following is the rate law for this reaction?
Rate = k[NH4+][NO]4
Rate = k [NH][NO]
Rate = k [NH][NO]2
Rate = k[NH]2[NO]
Gold sol can be prepared by
reduction of gold (Ill) chloride with formalin solution
hydrolysis of gold (III) chloride
oxidation of gold by aqua-regia
peptization
A.
reduction of gold (Ill) chloride with formalin solution
Gold sol can be prepared by reducing gold (III) chloride with formalin solution (aqueous solution of formaldehyde)
2AuCl3 + + 3HCOOH + 6HCl